Lil 14 yr old boy wants to start selling weed?

ight so, im 16, and i have this lil 14 year old cousin who i just met last december when i was visiting my grandpa in the hopsital. well, he wants to start selling weed. i live in iowa, and he lives in alaska, so i cant really do anything about it. i really dont want him to start selling weed and getting into trouble at such a young age. he is pretty smart, cute, fun, one of the coolest lil kids i have ever met. he has a lot going for him, and i dont want him to mess up his life. his mom and dad are both drunkies, they dont give a shiet about him and his brothers/sister. i feel soo bad for them, i can see why they turned out the way they did. not saying they are bad, buh he is already drinking and his lil 10 year old brother is already drinking too. and his sister, dropped outta highschool, and is getting married to a guy want he gets outta jail which is in march, who she met for only bout 4 months when he was convicted and thats when he asked her to marry her. ughhh so fast. what can i say to him to keep him out of it? im scared of what to say, because he thinks im real coool, and i dont want him to go around and think that im tryna be his momma or something. you know? what can i say?